Valve-grinder



P. P. HINCKLEY.

VALVE GRINDER.

APPLICATION FILED DEC. 24, 1919. 1,350,804, Patented Aug. 24, 1920.

I5 I I4 g WITNESSES. f9 f7 l/VVE/VTUR BY cifim Afro/mu UNITED STATES PATENT OFFICE.

PERCY P. I-IINCKLEY, 0F MERIDEN, CONNECTICUT, ASSIGNOR TO FOSTER, MERRIAM & COMPANY, A CORPORATION OF CONNECTICUT.

VALVE-GRIN DER.

Specification of Letters Patent.

Patented Aug.

Application filed December 24, 1919. Serial No. 347,109.

To all whom it may concern.-

Be it known that l, Pnnor P. HrNoKLnY, a citizen of the United States, residing at 212 Colony St, Meriden, county of New Haven, State of Connecticut, have invented an improvement in Valve-(hinders, or which the iollowing is a specification.

My invention aims to produce a novel valve grinder for use in grinding valves. It is especially useful in grinding the valves of a gasolene motor, more particularly of the type used in Ford cars. l. have shown my device in use in connection with a'valve seat reamer. Ordinarily, such a reamer does not have a hole drilled in its lower end, but in use in connection with my valve grinder I drill a hole nine-sixteenths of an incii deep,

more or less, in this end for the purpose hereinafter described.

With the above and other objects in view my device comprises the arrangement, construction and operation of parts as hereinafter fully disclosed and as clearly shown in the accompanying drawings.

In the drawings,

Figure 1 is a side elevation of my device as applied, showing also a valve seat reamer with a part of its lower end in section, and a valve in position to be ground in its seat, a portion of the valve being in section;

Fig. 2 a perspective view of my device, and

Fig. 3 is a fragmentary longitudinal sectional view of the outer end thereof, showing the members carried by said end in side elevation.

T he valve seat reamer is shown at 10, and 11 represents the improved valve grinder. in the lower end of the reamer is bored a hole, as shown at 12, for a purpose to be described. The valve grinder 11 comprises handle 13 having a downwardly extending offset 14 and an outer portion 15 as shown. At an intermediate point on the upper side of the outer portion of the grinder as used isiixed a stud 16, and near each end of the under side of said outer portion and spaced at equal and suitable distances from the position of stud 16 are securely fastened studs 17.

In operation the stud 16 is inserted into the hole in the valve seat reaincr, the two studs 17 are then inserted in holes in the top of the valve, and when pressure is brought to bear with one hand on the handle of the valve seat reamer, the handle of the valve grinder is gripped with the other hand, and oscillated. The stud 16 pivots in the hole 12, and studs 17 engage the valve and oscillate it to position.

My invention may also be used in connection with any other suitable device which has means to receive stud 16 and upon which pressure may be brought to bear to hold the valve grinder in place to grind both valve and seat.

l -i hat is claimed is:

A valve grinder comprising a handle hav ing a downwardly extending offset to which is integrally attached a flat outer portion carrying a plurality of studs, one above said outer flat portion and two below the same, one of each of the lower studs being disposed adjacent opposite ends of said flat outer portion and adapted to engage a valve, and said upper stud adapted to pivotally carry said handle and to have disengageable connection with a member in which it is oscillatable.

In testimony whereof I affix my signature.

PERCY P. HINCKLEY. 

